CVE-2025-25477 Cross-site scripting in n/a

High 8.1 Published Updated

Attackers can inject malicious JavaScript via Host header injection in SysPass, leading to code execution in victim browsers.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2025-25477?

CVE-2025-25477 is a high-severity cross-site scripting vulnerability in n/a, published on 27 Feb 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A host header injection vulnerability in SysPass 3.2x allows an attacker to load malicious JS files from an arbitrary domain which would be executed in the victim's browser.

Weakness: CWE-74

Which versions are affected by CVE-2025-25477?

It affects 1 product.

Products include Syspass Syspass.

How do I fix CVE-2025-25477?

No fix has been published for CVE-2025-25477 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-25477 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-25477 exists.

Sources

Also known as GHSA-jv4p-6m84-hhpv.

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